1# SPDX-License-Identifier: GPL-2.0 2include ../scripts/Makefile.include 3 4bindir ?= /usr/bin 5 6# This will work when dma is built in tools env. where srctree 7# isn't set and when invoked from selftests build, where srctree 8# is set to ".". building_out_of_srctree is undefined for in srctree 9# builds 10ifndef building_out_of_srctree 11srctree := $(patsubst %/,%,$(dir $(CURDIR))) 12srctree := $(patsubst %/,%,$(dir $(srctree))) 13endif 14 15# Do not use make's built-in rules 16# (this improves performance and avoids hard-to-debug behaviour); 17MAKEFLAGS += -r 18 19override CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include 20 21ALL_TARGETS := dma_map_benchmark 22ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS)) 23 24all: $(ALL_PROGRAMS) 25 26export srctree OUTPUT CC LD CFLAGS 27include $(srctree)/tools/build/Makefile.include 28 29# 30# We need the following to be outside of kernel tree 31# 32$(OUTPUT)include/linux/map_benchmark.h: ../../include/uapi/linux/map_benchmark.h 33 mkdir -p $(OUTPUT)include/linux 2>&1 || true 34 ln -sf $(CURDIR)/../../include/uapi/linux/map_benchmark.h $@ 35 36prepare: $(OUTPUT)include/linux/map_benchmark.h 37 38FORCE: 39 40DMA_MAP_BENCHMARK = dma_map_benchmark 41$(DMA_MAP_BENCHMARK): prepare FORCE 42 $(CC) $(CFLAGS) $(DMA_MAP_BENCHMARK).c -o $(DMA_MAP_BENCHMARK) 43 44clean: 45 rm -f $(ALL_PROGRAMS) 46 rm -rf $(OUTPUT)include 47 find $(or $(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete -o -name '\.*.cmd' -delete 48 49install: $(ALL_PROGRAMS) 50 install -d -m 755 $(DESTDIR)$(bindir); \ 51 for program in $(ALL_PROGRAMS); do \ 52 install $$program $(DESTDIR)$(bindir); \ 53 done 54 55.PHONY: all install clean prepare FORCE 56